Bus or car window construction



Feb. 25, 1941. J. scHUNK 2,233,370

BUS OR CAR WINDOW CONSTRUCTION Filed Jan. 18, 1939 Lazy-2r: :Quarantax1 '15.57 lNvENToR 5026*@ fg?, LIBUYEBFH EBHUNK.

@gula/m.

,7.5 d i ZZ Q 77 ATTORNEY Patented Feb. 25, 1941 UNITED STATES PATENT OFFICE BUS R CAR WINDOW CONSTRUCTION Application January 18, 1939, Serial No. 251,499

6 Claims.

The present invention relates to improvements in bus or car window construction, and particularly to the side channels or guideways in which the vertical side edges of the window sash are engaged, the invention being especially adapted for movable sashes of the type to be raised and lowered, although features of the invention are adapted for use with stationary sashes, so that the invention is intended to comprehend both types.

An object of the invention is to provide spring means adapted to exert spring pressure against the sides of the sash, and to provide adjustment means in connection therewith by which a given amount of spring pressure may be provided against the side of the window sash. In this respect the invention is intended to compensate for variations in post to post dimensions for one size ofv window openings within the tolerances normally allowed or expected in such constructions.

It is further proposed to provide such means arranged so that the desired amount of spring pressure can be brought about against the sides of a sash after it is installed, without the necessity for removal of the sash or any part of the Window construction from the window opening, and to this end it is proposed to provide adjusting means which may be reached in the raised position of the sash through suitable openings by means of a screw driver.

A further object of the invention is to provide weather seal means incorporated in one of the members of the channel assembly which makes it possible to have a freely operating sash, and to this end it is proposed to provide such weather seal means out of contact with the felt carried about the edge of the window sash, thus enabling the necessary clearances for free operation of the sash to be maintained without sacrificing effectual weather sealing.

With the above and other objects in view, embodiments of the invention are shown in the accompanying drawing, and these embodiments will be hereinafter more fully described with reference thereto, and the invention will be nally pointed out in the claims.

In the drawing:

Fig. 1 is a fragmentary elevation of one side of a window construction according to the exemplary illustrated embodiment of the invention, certain of the parts being shown broken away and others being shown in vertical section.

Fig. 2 is a horizontal sectional view, taken along the line 2--2 of Fig. 1.

(Cl. 18S-72) Fig. 3 is a vertical sectional view, taken along the line 3--3 of Fig. 1.

Fig. 4 is a vertical sectional view, taken along the line 4-4 of Fig. 1.

Fig. 5 is an enlarged side elevation of one of the spring units in detached relation.

Fig. 6 is a horizontal sectional view taken along the line G- of Fig. 5.

Fig. 7 is an enlarged horizontal sectional view,

taken along the line 1 1 of Fig. 1.

Similar reference characters indicate corresponding parts throughout the several figures of the drawing.

Referring to the drawing, the window sash comprises a glass It, having a top rail II, a bottom rail I2, and a pair of vertical side straps I3 connecting the top and bottom rails, only one of these side straps and the cooperating channel or guideway being shown. The side strap is of U-shape channel form in cross section to receive the vertical edge of the glass, its Vertical edges being bent outwardly and rearwardly, as at III- I 4, the rearwardly bent portions adapted to engage the edges of the felt facing strip I5, of U-shape cross-section, disposed about the side strap. The facing strip I5 forms a part of the Window sash, and in the case of the movable sash, adapted to be raised and lowered, moves with it.

The bottom rail I2 of the movable sash is provided at each end with a latch bolt I6 which normally projects outwardly through a slot in the facing strip I5, and is adapted to be operated by a suitable latch operating handle I1 secured upon the inner side of the bottom rail, actuation of the latch adapted to retract the bolt out of engage- 3 ment with the recessed locking and rack .structure of the side channel or guideway, as will presently more fully appear, to permit vertical raising and lowering movement of the sash.

The channel post or guideway, Within which the side strap of the sash is engaged, comprises an outside stop of generally right angular form in cross section, having a flange I8 constituting the outer leg of the channel, a base I9, and a relatively narrow ange having a recess 2I at its inner side. The removable inside stop 22 is engaged over the flange within the recess 2| to complete the channel, being provided with an offset flange portion 23 which embraces the outer side of the flange 20. The removable inside stop 22 is secured to the outside stop by means of screws 24 engaging the flange 20, and provided at suitable intervals. l

The channel post or guideway abuts the vertically disposedl frame portion 25 of the car window structure, and the base I9 of the outside stop is spaced from this frame portion so that a channel 26 is provided between this base and the frame portion.

` A channel strip is disposed within the channel post, and comprises a vertical front face portion 21, and side portions 24-29, the corners between the face portion and side portions -being each bent into a fin-like formation 29 disposed diagonally outwardly to provide spaced vertically disposed line contact bearing surfaces to engage the vertical face of the felt strip I5. The inner free ends of the side portions 28 of the channel strip are bent outwardly at right angles, as at 30, thus providing with the corner portions 29 vertical pockets at each side of the channel strip.

Within the vertical pocket adjacent the flange I8 ofthe outside stop there is engaged a felt weather seal strip 3| which bears upon said lflange I8. 'Ihe flanges Il of the channel strip are adapted to be engaged byI the spring pressure means, as will presently more fully appear, and the vertical channel space between the side portions 28-28 is adapted to be engaged by the adjustment means of the springs, both for the purpose of positioning the channel strip and enabling the adjustment means to be operated through the channel strip, asvwill presently more fully appear.

The front face portion 21 of the channel strip is provided with vertically spaced slots 32 of rectangular form, and in the lowermost of these slots there is engaged a locking recess forming strip 39, having horizontal upper and lower walls and a vertical connecting wall, and provided with end portions 34--34 which are secured within the channel strip above and below the ends of the slot 32 by spot-welding or the like. Within each of the other slots 32 there is engaged a rack forming strip member bent to form a horizontal lower wall and an upwardly and outwardly inclined connecting wall, and provided with end portions 36-36 which are secured within the strip above and below the ends of the slot by spot welding or the like. 'I'hese rack forming portions are provided at suitable points at which it is desired to permit the window to be supported in raised position. In the case of a stationary sash the channel strip is of the same form and arrangement, except that it is not slotted and provided with the locking and rack forming strip members.

'Ihe number of spring units used at each side of the sash is determined by the amount of spring pressure desired, and the height and type of sash used. In the illustrated embodiment two spring units are shown in such relation that they press against the upper and lower portions of one side of the sash. It will be understood that the spring arrangement at the other side of the sash is identical. f

The spring 31 is in the form of an elongated bowed leaf provided at its central portion with an aperture 39 through which there is engaged the shank portion 39 of the spring supporting and adjusting screw member, the screw portion 40 being formed at the inner end, and a shoulder flange portion 4I being formed at the inner end of the shank portion to support the spring at its rearward side. A sleeve 42 is engaged upon the shank at the forward side of the spring and is connected to the shank by pressing or crimping.

a bead 43 therein into engagement with an annular groove 44 in the shank, the connection thus provided securing the spring between the shoulder flange 4I and the sleeve and permitting turning of the shank and screw. The forward end of the shank, which projects beyond the forward end of the sleeve is provided with a slot 45 for the engagement of .a screw driver therewith.

The screw'40 is preferably provided with a slit 46 for the purpose of giving it a slight springiness to maintain it against too free turning in the square headed threaded bushing 41 secured in a hole 49 in the base portion I9 of the channel post, and with which the screw portion is engaged. 'I'his bushing which is inserted into the hole 49 from the outer side of the base I9 is secured by spinning over its inner end portion into a countersunk portion 49 of the hole 48, one side of the square head being engaged with the flange I9 at the inner end of the base portion I9 to prevent turning of the bushing.

The diameter of the bushing 42 is such that it will just fit within the space between the side portions 28 of the channel strip and will therefore support the channel strip in centralized relation in the guideway. The arrangement also prevents cooking of the channel strip and binding upon the sleeve.

'I'he face portion 21 of the channel strip is provided in relation to each of the spring units with a hole 50 in line with the screw. shank 39 and through which a screw driver may be engaged with the slot 45 to adjust the spring pressure. By turning the screw the perch of the spring may be moved inwardly or outwardly with respect to the channel strip and thus the spring pressure will be changed as desired. This operation may be carried out without the necessity for removing the window sash or other parts of the assembly simply by raising the sash to expose the holes SII. A given spring pressure may thus be set up between the sash and post channel even though variations may exist in the spacing of the post channels.

'I'he xed weather seal strip 3| effectually seals the channel post, while permitting the necessary clearance between the sides of the channel strip I5 and the outer and inner flanges I9 and 22 of the channel post to have a freely operating window sash. 'Ihe spring pressed engagement of the channel strip with the strip I5 along the spaced line contact corner portions 29 provides a weather l seal for the sash and at the same time permits the sash to have free raising and lowering movement.

' I have illustrated and described a preferred and satisfactory embodiment of the invention.

but it will be obvious that changes may be made therein, within the spirit and scope thereof, as defined in the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. In a window construction, a side channel including inner and outer stop portions and a base portion, a window sash having a vertical side adapted to engage within said channel, a strip member disposed in said side channel between said base portion and said sash, spring means disposed between said base portion and said strip member adapted to exert outward pressure on said strip member, and an adjustable mounting screw rotatably connected to said spring means having threaded engagement with said base portion and arranged to have inward and outward adjustment movement relatively to said base portion and adapted upon adjustment to vary the distance between said spring means and base portion, said strip member being freely removable outwardly from said mounting screw.

2. In a window construction, a side channel including inner and outer stop portions and a base portion, a window sash having a vertical side adapted to'engage within said channel, a strip member disposed in said side channel between said base portion and said sash, spring means disposed between said base portion and. said strip member adapted to exert outward pressure on said strip member, an adjustable mounting screw rotatably connected to said spring means having threaded engagement with said base portion and arranged to have inward and outward adjustment movement relatively to said base portion and adapted upon adjustment to vary the distance between said spring means and base portion, and means at the outer end of said screw adapted to be engaged by a turning tool, said strip member being freely removable outwardly from said mounting screw and having an opening in line with said screw for the insertion of such turning tool.

3. In a window construction, a side channel including inner and outer stop portions and a base portion, a window sash having a vertical side vadapted to engage within said channel, a strip member disposed in said side channel between said base portion and said sash, an adjustable spring unit disposed between said base portion and said strip member adapted to exert outward pressure on said strip member comprising a bowed leaf spring adapted to engage at its end portions with said strip member and having a central aperture, and an adjustable mounting screw engaged through said aperture rotatably connected to said spring to provide a perch for said spring, said screw having threaded engagement with said base portion and adapted upon adjustment to vary the distance between said spring and said base portion.

4. In a window construction, a side channel including inner and outer stop portions and a base portion, a window sash having a vertical side adapted to engage within said channel, a strip member disposed in said side channel between said base portion and said sash, an adjustable spring unit disposed between said base portion and said strip member adapted to exert outward pressure"l on said strip member comprising a bowed leaf spring adapted to engage at its end portions with said strip member and having a central aperture, an adjustable mounting screw having a screw portion at one side of said spring and a shank portion engaged through said aperture and extending to the other side of said spring, a sleeve secured to said opening rotatably engaged about said shank portion, and interlocking means on said screw and sleeve rotatably securing them against relative longitudinal movement, said screw portion having threaded engagement with said base portion and arranged to have inward and outward adjustment movement relatively to said base portion and adapted upon adjustment to vary the distance between said spring and base portion, said strip member being freely removable outwardly from said screw and said sleeve.

5. In a window construction, a side channel including inner and outer stop portions and a base portion, a window sash having a vertical side adapted to engage for vertical sliding movement within said channel betweensaid inner and outer stop portions, a U-crosssection weatherstrip of yieldable materialengaged about said vertical side of said sash and slidable therewith in said channel, a strip member disposed in said side channel between said base portion and said weatherstrip having inward and outward lateral sliding movement and fixed against Vertical movement, spring means disposed between said base portion and said strip adapted to exert out'- ward pressure on said strip to press it against the transverse edge surface of said weatherstrip to provide a weather seal engagement between said strip member and said weatherstrip, and a second weatherstrip of yieldable material disposed between one side of said strip member and said outer stop portion of the side channel xed against vertical movement and forming a weather seal between said strip member and said outer stop portion.

v6. In a window construction, a side channel including inner and outer stop portions and a base portion, a Window sash having a vertical side adapted to engage for vertical sliding movement within said channel between said inner and outer stop portions, a U-cross section weatherstrip of yieldable material engaged about said vertical side of said sash and slidable therewith in said channel, a strip member disposed in said side channel between said base portion and said weatherstrip having inward and outward lateral sliding movement and ixed against vertical movement and having a vertical channel adjacent and opposed to said outer stop portion, spring means disposed between said base portion and said strip adapted to exert outward pressure on said strip to press it against the transverse edge surface of said weatherstrip to provide a weather seal engagement between said strip member and said weatherstrip, and a second weatherstrip of yieldable material disposed within said channel of said strip member and movable laterally therewith engaging the inner surface of said outer stop portion and forming a weather seal between said strip member and said outer stop portion.

JOSEPH SCHUNK. 

